Results 71 to 80 of about 4,735 (211)

Experimental design and control methods for dose rate optimization in a synchrotron‐based proton therapy beamline

Precision Radiation Oncology, Volume 9, Issue 4, Page 234-241, December 2025.
Monte Carlo modeling of the geometry and particle trajectories (100 primary proton histories) without any scatterer and with different second scatterer (made of tungsten) thicknesses. Color scheme for particles: protons – blue, electrons – red, photons – green, and neutrons – yellow.
Jason Tang, Daniel Liu, Jacob Mathew, Sabrina Campelo, Lawrence Bronk, Paige Taylor, Yuting Li, Fada Guan   +7 more
wiley   +1 more source

Activity‐dependent transit dose assessment in 192Ir high‐dose‐rate brachytherapy surface applicator using GafChromicTM EBT4 film

Precision Radiation Oncology, Volume 9, Issue 4, Page 242-250, December 2025.
Dose distribution on an example film irradiated by the high‐dose rate brachytherapy 192Ir source of 9.543 Ci (38,840 U) with 100‐s nominal dwell time. The film‐measured dose map and the vertical and horizontal dose profiles across the center are illustrated.
Daniel Liu, Emily Draeger, Christopher J. Tien, Fada Guan   +3 more
wiley   +1 more source

Skin Dosimetry in Radiotherapy of Breast Cancer: a Comparison between EBT and EBT3 Radiochromic Films

Journal of Biomedical Physics and Engineering, 2016
Objective: Radiochromic EBT3 film is a later generation of radiochromic films. The aim of this study is to compare EBT and EBT3 radiochromic films in radiotherapy fields of breast cancer.
Bahreyni Toosi M. T., Mohamadian N., Ghorbani M., Khorshidi F., Akbari F., Knaup C.   +5 more
doaj  

Optimizing dosimetric leaf gap parameters for radiation therapy: A comparative study using three diode‐array verification tools and an ionization chamber

Journal of Applied Clinical Medical Physics, Volume 26, Issue 11, November 2025.
Abstract Background The dosimetric leaf gap (DLG) value is a key parameter that affects dose calculation accuracy in radiotherapy when using the Eclipse treatment planning system. Diode array dosimeters are used to determine the optimal DLG value because they are convenient and fast, providing instant readout of planar dose distributions rather than a ...
Yoshitsugu Matsumoto, Ryosuke Sato, Natsumi Futakami, Tsuyoshi Fukuzawa, Ryuta Nagao, Toshihisa Kuroki, Tatsuya Mikami, Yoji Nakano, Yuri Toyoda, Koichi Fukumoto, Akitomo Sugawara   +10 more
wiley   +1 more source

Validation of Geant4 nuclear reaction models for hadrontherapy and preliminary results with SMF and BLOB [PDF]

, 2017
Reliable nuclear fragmentation models are of utmost importance in hadrontherapy, where Monte Carlo (MC) simulations are used to compute the input parameters of the treatment planning software, to validate the deposited dose calculation, to evaluate the ...
Barbara Caccia, Carlo Mancini Terracciano, Giuseppe A. P. Cirrone, Luciano Pandola, Maria Colonna, Marzio De Napoli, Paolo Napolitani   +6 more
core   +1 more source

Detector response and dose calculation lateral to material interfaces for 6 MV photon beam

Journal of Applied Clinical Medical Physics, Volume 26, Issue 11, November 2025.
Abstract Background Dose calculation around inhomogeneities is challenging for many algorithms. A validation of dose distributions in these conditions is not straightforward, as detector response close to material interfaces is affected by the non‐equilibrium situation, the changing energy spectrum and the volume effect in a steep dose gradient ...
Jonas Ringholz, Otto Andreas Sauer, Sonja Wegener   +2 more
wiley   +1 more source

A device for production of PAGAT dosimetry gel

Medical Physics, Volume 52, Issue 11, November 2025.
Abstract Background PAGAT (PolyAcrylamide Gelatine gel fabricated at ATmospheric conditions) gel dosimetry provides a valuable three‐dimensional (3D) measurement tool for photon therapy, particularly in the context of advanced radiotherapy techniques such as volumetric modulated arc therapy or intensity‐modulated radiation therapy.
Christina Stengl, Maike Kleiss, Ronald E. Teto, Raquel F. Augusto, Christian P. Karger, Armin Runz   +5 more
wiley   +1 more source

Responses of Gafchromic EBT3 films with polypropylene barriers to UV radiation

Results in Physics, 2017
The present paper proposed to use Gafchromic EBT3 films covered with 2, 4 and 6 polypropylene-film barriers for long-term monitoring of solar UV radiation. The usable range for the films with 2 barriers was from ∼4 to ∼40 Jcm−2, that for the films with 4
K.N. Yu, S.L. Chun, P.M. Chan
doaj   +1 more source

A nomogram to determine required seed air kerma strength in planar 131 Cesium permanent seed implant brachytherapy [PDF]

, 2019
Purpose: Intraoperatively implanted Cesium-131 ( 131 Cs) permanent seed brachytherapy is used to deliver highly localized re-irradiation in recurrent head and neck cancers.
Bar-Ad, Voichita, Doyle, Laura, Hubley, Emily, Luginbuhl, Adam J., Trager, Michael   +4 more
core   +1 more source

Dynamics of charge-displacement channeling in intense laser-plasma interactions [PDF]

, 2007
The dynamics of transient electric fields generated by the interaction of high intensity laser pulses with underdense plasmas has been studied experimentally with the proton projection imaging technique.
Borghesi, M, Ceccherini, F, Cecchetti, C A, Fuchs, J, Galimberti, M, Gizzi, L A, Heathcote, R, Jung, R, Kar, S, Liseykina, T V, Macchi, A, Osterholz, J, Romagnani, L, Schiavi, A, Willi, O   +14 more
core   +3 more sources